GB2303878A - Method and apparatus for rate shaping injection in a hydraulically-actuated electronically controlled fuel injector - Google Patents

Method and apparatus for rate shaping injection in a hydraulically-actuated electronically controlled fuel injector

Info

Publication number
GB2303878A
GB2303878A GB9624355A GB9624355A GB2303878A GB 2303878 A GB2303878 A GB 2303878A GB 9624355 A GB9624355 A GB 9624355A GB 9624355 A GB9624355 A GB 9624355A GB 2303878 A GB2303878 A GB 2303878A
Authority
GB
United Kingdom
Prior art keywords
actuating fluid
injection
flow
hydraulically
rate shaping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB9624355A
Other versions
GB9624355D0 (en
GB2303878B (en
Inventor
Alan R Stockner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Caterpillar Inc
Original Assignee
Caterpillar Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Caterpillar Inc filed Critical Caterpillar Inc
Publication of GB9624355D0 publication Critical patent/GB9624355D0/en
Publication of GB2303878A publication Critical patent/GB2303878A/en
Application granted granted Critical
Publication of GB2303878B publication Critical patent/GB2303878B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/06—Pumps peculiar thereto
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/025—Injectors structurally combined with fuel-injection pumps characterised by the pump drive hydraulic, e.g. with pressure amplification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/105—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive hydraulic drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/46—Valves
    • F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/48—Assembling; Disassembling; Replacing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B2075/1804—Number of cylinders
    • F02B2075/1832—Number of cylinders eight
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/14—Direct injection into combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/006—Camshaft or pushrod housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/304—Fuel-injection apparatus having mechanical parts, the movement of which is damped using hydraulic means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

A hydraulically-actuated electronically-controlled fuel injection system (10) includes a solenoid operated main valve (500, 500a) that controls the flow of actuating fluid to the individual injectors (18). The flow of pressurized actuating fluid pressurizes the fuel and causes injection to occur. The present invention accomplishes pilot injection and/or other injection rate shaping by constricting the flow of pressurized actuating fluid to the piston pump chamber (190) of the individual injectors (18) during a portion of each injection cycle. Constricting the flow of pressurized actuating fluid is accomplished by a separately controlled solenoid valve preferably positioned between the actuating fluid manifold (334, 336) and the main control valves of each individual injector (18).
GB9624355A 1995-05-11 1996-04-12 Method and apparatus for rate shaping injection in a hydraulically-actuated electronically controlled fuel injector Expired - Fee Related GB2303878B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/439,051 US5517972A (en) 1994-11-23 1995-05-11 Method and apparatus for rate shaping injection in a hydraulically-actuated electronically controlled fuel injector
PCT/US1996/005045 WO1996035870A1 (en) 1995-05-11 1996-04-12 Method and apparatus for rate shaping injection in a hydraulically-actuated electronically controlled fuel injector

Publications (3)

Publication Number Publication Date
GB9624355D0 GB9624355D0 (en) 1997-01-08
GB2303878A true GB2303878A (en) 1997-03-05
GB2303878B GB2303878B (en) 1998-08-05

Family

ID=23743084

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9624355A Expired - Fee Related GB2303878B (en) 1995-05-11 1996-04-12 Method and apparatus for rate shaping injection in a hydraulically-actuated electronically controlled fuel injector

Country Status (5)

Country Link
US (1) US5517972A (en)
JP (1) JPH10503260A (en)
DE (1) DE19680461T1 (en)
GB (1) GB2303878B (en)
WO (1) WO1996035870A1 (en)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5619969A (en) * 1995-06-12 1997-04-15 Cummins Engine Company, Inc. Fuel injection rate shaping control system
US5954487A (en) * 1995-06-23 1999-09-21 Diesel Technology Company Fuel pump control valve assembly
DE19780907C2 (en) * 1996-08-29 2003-02-06 Mitsubishi Motors Corp Fuel injection system
US5878720A (en) * 1997-02-26 1999-03-09 Caterpillar Inc. Hydraulically actuated fuel injector with proportional control
US5842452A (en) * 1997-11-25 1998-12-01 Pattanaik; Satish Idle stabilizing variable area inlet for a hydraulically-actuated fuel injection system
US6026780A (en) * 1997-12-18 2000-02-22 Caterpillar Inc. Method for controlled transition between use of different injection waveform types in a hydraulically-actuated electronically-controlled fuel injection system
US6082331A (en) * 1997-12-19 2000-07-04 Caterpillar Inc. Electronic control and method for consistently controlling the amount of fuel injected by a hydraulically activated, electronically controlled injector fuel system to an engine
US6014956A (en) * 1997-12-22 2000-01-18 Caterpillar Inc. Electronic control for a hydraulically activated, electronically controlled injector fuel system and method for operating same
US6019091A (en) * 1998-08-13 2000-02-01 Diesel Technology Company Control valve
EP1112445B1 (en) 1998-09-10 2004-05-12 International Engine Intellectual Property Company, LLC. Fuel injector
US6085992A (en) * 1998-11-19 2000-07-11 Caterpillar Inc. Hydraulically-actuated fuel injector with rate shaping through restricted flow to intensifier piston
US6173699B1 (en) 1999-02-04 2001-01-16 Caterpillar Inc. Hydraulically-actuated fuel injector with electronically actuated spill valve
US6089470A (en) * 1999-03-10 2000-07-18 Diesel Technology Company Control valve assembly for pumps and injectors
US6158419A (en) * 1999-03-10 2000-12-12 Diesel Technology Company Control valve assembly for pumps and injectors
US6279539B1 (en) * 1999-04-20 2001-08-28 Caterpillar Inc. Hydraulically actuated fuel injector with cold start features
DE19939421A1 (en) * 1999-08-20 2001-03-01 Bosch Gmbh Robert Combined stroke / pressure controlled fuel injection method and system for an internal combustion engine
DE19939419A1 (en) * 1999-08-20 2001-03-01 Bosch Gmbh Robert Fuel injector
US6467457B1 (en) * 1999-10-25 2002-10-22 International Engine Intellectual Property Company, L.L.C. Injector actuating fluid check and methods
DE10023952A1 (en) * 2000-05-16 2001-11-29 Bosch Gmbh Robert Valve for controlling liquids
US6450778B1 (en) 2000-12-07 2002-09-17 Diesel Technology Company Pump system with high pressure restriction
US6354271B1 (en) 2000-12-11 2002-03-12 Caterpillar Inc. Hydraulically-actuated fuel injector with enhanced peak injection pressure and stepped top intensifier
US6467391B2 (en) 2000-12-19 2002-10-22 Caterpillar Inc Hydraulic device with anti-stiction features
US6439201B1 (en) * 2000-12-20 2002-08-27 Caterpillar Inc. Fuel injector having dual flow rate capabilities and engine using same
DE10126686A1 (en) * 2001-06-01 2002-12-19 Bosch Gmbh Robert Fuel injection system, for an IC motor, has a pressure amplifier with a sliding piston and controlled outflow cross section stages to set the fuel pressure according to the piston stroke and give a boot injection action
US6715466B2 (en) 2001-12-17 2004-04-06 Caterpillar Inc Method and apparatus for operating an internal combustion engine exhaust valve for braking
US20030168031A1 (en) * 2002-03-07 2003-09-11 Fenelon Thomas R. Fluid system for an internal combustion engine
US7819107B2 (en) 2007-12-21 2010-10-26 Caterpillar Inc Pumping element for a fluid pump and method
US8720201B2 (en) * 2010-11-24 2014-05-13 Hamilton Sundstrand Corporation Method of monitoring an electronic engine control (EEC) to detect a loss of fuel screen open area
US20150075155A1 (en) * 2013-07-05 2015-03-19 Kanzaki Kokyukoki Mfg. Co., Ltd. Apparatus including hydrostatic transmission
US10895249B2 (en) 2013-07-05 2021-01-19 Kanzaki Kokyukoki Mfg. Co., Ltd. Hydraulic transaxle
US11440401B2 (en) 2013-07-05 2022-09-13 Kanzaki Kokyukoki Mfg. Co., Ltd. Hydraulic transaxle
US10865872B2 (en) 2013-07-05 2020-12-15 Kanzaki Kokyukoki Mfg. Co., Ltd. Hydraulic transaxle
US9903324B2 (en) * 2013-10-28 2018-02-27 Yanmar Co., Ltd. Engine device
CA2842729C (en) * 2014-02-11 2015-09-01 Westport Power Inc. Starting a gaseous and pilot fuelled engine
US10508632B1 (en) 2019-08-22 2019-12-17 Stephen M. Constable Engine rail pressure system
US11174811B2 (en) 2020-01-02 2021-11-16 Caterpillar Inc. Fuel system configured for back end rate shaping using mechanically actuated fuel injector

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5445129A (en) * 1994-07-29 1995-08-29 Caterpillar Inc. Method for controlling a hydraulically-actuated fuel injection system
US5447138A (en) * 1994-07-29 1995-09-05 Caterpillar, Inc. Method for controlling a hydraulically-actuated fuel injections system to start an engine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5445129A (en) * 1994-07-29 1995-08-29 Caterpillar Inc. Method for controlling a hydraulically-actuated fuel injection system
US5447138A (en) * 1994-07-29 1995-09-05 Caterpillar, Inc. Method for controlling a hydraulically-actuated fuel injections system to start an engine

Also Published As

Publication number Publication date
JPH10503260A (en) 1998-03-24
US5517972A (en) 1996-05-21
DE19680461T1 (en) 1997-06-05
WO1996035870A1 (en) 1996-11-14
GB9624355D0 (en) 1997-01-08
GB2303878B (en) 1998-08-05

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20030412